Dental impression tray



FIG. 1 is a perspective view of a dental impression tray showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevation thereof;

FIG. 5 is a left side elevation thereof;

FIG. 6 is a front elevation thereof; and,

FIG. 7 is a rear elevation thereof. 

I claim the ornamental design for a dental impression tray, as shown and described. 